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US 5,159,908 AGranted
Cranking device for internal combustion engines
AssigneeRobert Bosch GmbH
InventorsManfred Eyermann, Josef Weigt
Life of this patent
Estimating the term…
Abstract
A cranking device for internal combustion engines includes a permanently excited cranking motor and an electrical run-down brake, having a switching device (25) which, during the run-down phase of the cranking device, connects the connecting leads of the brushes (4, 4') of the cranking motor (1) to one another via a resistor (24). An additional winding of the engaging relay (15) of the cranking device is used as the resistor.
Claims15
A cranking device for internal combustion engine, comprising a permanently excited starter motor having two brushes with respective connecting lines;
- a switching device having a change-over contact;
- and an engaging relay for actuating said change-over contact and having a braking impedance element arranged in said engaging relay, said change-over contact being movable between a first position in which it connects during a starting phase of said starter motor, the connecting lines of said two brushes to a voltage supply, and a second position in which it connects, during a rundown phase of said starting motor, the connecting lines of said two brushes to each other via said braking impedance element of said engaging relay.
Dependencies are inferred from the claim text.